The Wealth of Nations by Part 1 Chapter 11 Page 256

twenty-eight pounds of English wool, was not less than ten shillings of the money of those times, containing at the rate of twentypence the ounce, six ounces of silver Tower weight, equal to about thirty shillings of our present money.

In the present times, one-and-twenty shillings the tod may be reckoned a good price for very good English wool. The money-price of wool, therefore, in the time of Edward III, was to its money-price in the present times as ten to seven. The superiority of its real price was still greater. At the rate of six shillings and eightpence the quarter, ten shillings was in those ancient times the price of twelve bushels of wheat. At the rate of twenty-eight shillings the quarter, one-and-twenty shillings is in the present times the price of six bushels only. The proportion between the real prices of